Brigham Young, urban planning and the 'City of Zion' plat

In 1849, Brigham Young directed the settlement of Utah Valley, Sanpete Valley and Tooele Valley, Leonard J. Arrington wrote in "Brigham Young: American Moses." Tooele County, originally known as "Tuilla," according to pioneer.utah.gov, was one of six counties created in January 1850. Settlers herded livestock in the area before a permanent settlement began in 1849.